Question

multiple select question select all that apply which of the following can be concluded based on this diagram showing the change in the rate of photosynthesis as a function of the intensity of light under varying conditions? at all temperatures, the rate of photosynthesis remains constant at all light intensities. at light intensities greater than 1500 foot - candles, higher temperature results in higher photosynthetic rate. regardless of the concentration of carbon dioxide, when light intensity is increased from 2000 foot - candles to 2500 foot - candles, the rate of photosynthesis remains unchanged. regardless of the ambient temperature, increasing light intensity always results in an increase in photosynthetic rate

Explanation:

1. Analyze the first option: The graph shows that the rate of photosynthesis changes with light - intensity at different temperatures, so this option is incorrect.
2. Analyze the second option: For light intensities greater than 1500 foot - candles, the curve for 35°C is above the curve for 20°C, indicating a higher photosynthetic rate at higher temperature.
3. Analyze the third option: Looking at the curves, when light intensity increases from 2000 to 2500 foot - candles, the rate of photosynthesis plateaus for all the curves, regardless of CO₂ concentration.
4. Analyze the fourth option: The curves level off at high light intensities, so increasing light intensity does not always result in an increase in photosynthetic rate.

Answer:

B. At light intensities greater than 1500 foot - candles, higher temperature results in higher photosynthetic rate.
C. Regardless of the concentration of carbon dioxide, when light intensity is increased from 2000 foot - candles to 2500 foot - candles, the rate of photosynthesis remains unchanged.